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Identification Method of Components of Various Clothing Fabrics
Source: | Author:tpl-c6946c5 | Publish time: 317 days ago | 66 Views | Share:
A simple way to identify the composition of garment fabrics is combustion method. The method is to take a strand of cloth containing warp and weft yarn at the seam edge of the garment, ignite it with fire, observe the state of the burning flame, smell the smell of the burning yarn, and see the residue after burning, so as to judge whether the fabric components labeled on the durability label of the garment conform to the true or false fabric components.
A simple way to identify the composition of garment fabrics is combustion method. The method is to take a strand of cloth containing warp and weft yarn at the seam edge of the garment, ignite it with fire, observe the state of the burning flame, smell the smell of the burning yarn, and see the residue after burning, so as to judge whether the fabric components labeled on the durability label of the garment conform to the true or false fabric components.


I. Cotton and hemp fibers


Both cotton and hemp fibers are instantly ignited near the flame, which burns rapidly with yellow flame and blue smoke. The difference between them is that cotton burns with paper odor and hemp burns with grass ash odor. After burning, cotton has very little powder ash, which is black or gray, while hemp produces a small amount of gray-white powder ash.


2. Wool Fiber and Silk


Mao fumes when burning, bubbles when burning, burns slowly, emits a burning smell of burning hair. After burning, the ash is mostly glossy black spherical particles, and the finger crushes as soon as it is pressed. When silk is burned, it shrinks into a cluster, burns slowly, accompanied by a hissing sound, emits a burning smell of hair, burns into small black-brown globular ashes, and twists hands to pieces.


3. Nylon and Polyester


Polyamide fibers, known as polyamide fibers, rapidly shrink and melt into white colloidal shape near the flame. They melt and burn in the flame, drop and foam. When burning, there is no flame. Without the flame, it is difficult to continue burning, emit celery odor, and light brown melt is not easy to crush after cooling. Polyester fibers are easy to ignite and melt near the flame. When burning, they melt and emit black smoke. They are yellow flame and emit fragrant odor. After burning, the ashes are black-brown lumps, which can be twisted with fingers.


IV. Acrylic and Polypropylene Fibers


Acrylic fibers are known as polyacrylonitrile fibers. They melt and shrink near fire. After ignition, they emit black smoke. The flame is white. After leaving the flame, they burn rapidly, emit the bitter smell of burnt meat. After burning, the ash is irregular black lump and the hand twists are fragile. Polypropylene fibers, known as polypropylene fibers, melt near the flame, flammable, slow off-fire combustion and smoke, yellow flame at the top, blue at the bottom, emitting an oil smell, burnt ashes for hard round light yellow brown particles, hand twist fragile.


V. Vinylon and Polyvinyl Chloride


Polyvinyl alcohol formaldehyde fibers, which are not easy to ignite, melt and shrink in the near flame. When burning, there is a flame at the top. When the fibers are melted into colloidal flame, they will become larger, with thick black smoke, emit bitter odor. After burning, there are small black beads, which can be crushed by fingers. Polyvinyl chloride (PVC) fibers are hard to burn and extinguish immediately after fire. The flame is yellow and the lower end of the flame is green and white smoke. It emits a pungent, pungent and sour taste. After burning, the ashes are irregular black-brown lumps, and the fingers are not easy to twist.


VI. Spandex and Fluorocarbon


Polyurethane fibers, known as polyurethane fibers, melt and burn near the fire. The flame is blue when burning, and continues to melt away from the fire. It emits a special irritating odor. After burning, the ash is soft and fluffy black ash. Polytetrafluoroethylene (PTFE) fibers are known as fluorite fibers by ISO organization. They melt only near the flame, are difficult to ignite and do not burn. The edge flame is blue-green carbonization, melting and decomposition. The gas is toxic, and the melt is hard black beads. Fluorocarbon fibers are often used in the textile industry to produce high-performance sewing threads.


VII. Viscose Fiber and Copper Ammonium Fiber


Viscose fiber is flammable, burns fast, the flame is yellow, emits the smell of burning paper, less ash after burning, showing a smooth twisted strip of light gray or gray-white powder. Copper-ammonium fiber, commonly known as Kapok tiger, burns near the flame. It burns fast. The flame is yellow and emits ester-acid odor. After burning, the ash is very little, with only a small amount of gray-black ash.